Proteins are the basic macronutrients and the “building blocks” of our body. Unlike fats, proteins are never stored in our body, so it is necessary to supplement them. We can maintain our muscle mass and build muscle through optimal protein intake. 20-30% of our energy intake should consist of proteins. These consist mainly of amino acids, which are known to be the basis for the regeneration of the entire organism, especially muscle mass, tendons and joints as well as the elasticity of the skin.